update wiki link in ohai.gemspec
update wiki link in ohai.gemspec

broadinstitute/ohai,cmluciano/ohai,glennmatthews/ohai,dreamnite/ohai,joyent/ohai,chef/ohai,MSOpenTech/ohai,juliandunn/ohai,higanworks/ohai,jbfavre/ohai,jaymzh/ohai,johnbellone/ohai,jseely/ohai,zshuo/ohai,cmluciano/ohai,shtzr840329/ohai,phreakocious/ohai,criteo-forks/ohai,tas50/ohai-1,bougyman/ohai,sh9189/ohai,davide125/ohai,MSOpenTech/ohai,tas50/ohai-1,Fodoj/ohai,jaymzh/ohai,acaiafa/ohai,nathwill/ohai,adamleff/ohai,shtzr840329/ohai,johnbellone/ohai,jseely/ohai,phreakocious/ohai,sh9189/ohai,adamleff/ohai,broadinstitute/ohai,375gnu/ohai,http-418/ohai,zshuo/ohai,http-418/ohai,mattray/ohai,higanworks/ohai,375gnu/ohai,zuazo-forks/ohai,davide125/ohai,Juniper/ohai,bougyman/ohai,mattray/ohai,n-marton/ohai,btm/ohai,dreamnite/ohai,numericillustration/ohai,criteo-forks/ohai,numericillustration/ohai,jbfavre/ohai,Juniper/ohai,acaiafa/ohai,juliandunn/ohai,btm/ohai,chef/ohai,nathwill/ohai,glennmatthews/ohai,n-marton/ohai,Fodoj/ohai